How Do You Manage Microsoft 365 Security and Prove It Works?

Microsoft 365 security management is the ongoing work of knowing how your tenant is configured, catching settings that change, fixing the gaps that matter most, and producing evidence that your controls work.

Microsoft provides the controls. Managing them across Entra ID, Defender, Intune, Purview, SharePoint, and Teams is the part your team owns. This article walks through what to manage and how to turn it into evidence your auditors and executives can use.

What does Microsoft 365 security management cover?

The security surface of a Microsoft environment spreads across many workloads. A complete program accounts for each of these areas.

Is there one place to see all Microsoft 365 security settings?

Microsoft spreads these settings across separate admin centers, and each one can be edited independently. Microsoft Secure Score gives a built-in view, measured against the same Microsoft recommendations for every tenant.

For teams that need everything side by side, the Accelerynt Security Platform aggregates posture across Identity, Email, SharePoint, Teams, Defender XDR, Power Platform, Azure DevOps, GitHub, AWS, and GCP. You can sort by worst first and open any score to see the findings behind it.

Organizations that manage several tenants, whether through acquisitions or as a service provider, see them all in one console, with findings and evidence kept separate by tenant.

How do you know when a Microsoft 365 security setting changes?

Settings move for ordinary reasons. An administrator adds an exclusion while troubleshooting, a license change alters a default, or Microsoft updates a service. Each change can move the tenant away from the baseline your team approved.

Drift tracking compares the live configuration with that baseline and records each change. A useful drift record answers four questions:

• What changed: the setting, with its before and after values.
• When it changed: a timestamp for the event.
• Who changed it: the account responsible.
• Where it stands: workflow status from detection through remediation.

With the Accelerynt Security Platform, scans run on a recurring schedule your team configures. Between scans, drift detection watches critical controls and alerts your team when a setting moves from its approved state. For what to do once drift is found, read what should happen when configuration drift is detected.

How can you collect Microsoft 365 audit evidence without screenshots?

Screenshots and policy documents show what someone saw on one day. Boards, auditors, and cyber insurance underwriters now want specific evidence: which controls are enforcing, which accounts are covered, and what changed since the last review.

Evidence generated from the tenant answers those questions directly. Findings name the specific account, policy, or role, and each one carries its framework mappings, so your compliance team can pull evidence by control.

A risk register adds the history auditors ask about: when each finding was first discovered, when it was last seen, its current status, and whether it came back after a fix. Because the evidence comes from a platform that operates independently of the systems it evaluates, it can be checked by someone outside your company. For how this testing works, read what continuous control validation is.

Can you check Microsoft 365 against CIS benchmarks?

Yes. CIS Microsoft 365 is one of 15 frameworks the Accelerynt Security Platform maps findings to in one validation pass. The others are CISA SCuBA, NIST CSF 2.0, NIST 800-53, MITRE ATT&CK, Microsoft MCSB, HIPAA, PCI-DSS v4.0, ISO 27001:2022, and CIS benchmarks for DevOps, GitHub, Azure, AWS, GCP, and Google Workspace.

Because each finding maps to several frameworks at once, one gap in your tenant shows up as evidence everywhere it applies, without a separate assessment for each standard. For the benchmark itself, its two profile levels and the ways to run a check, read how to check Microsoft 365 against the CIS benchmark.

Is Microsoft Secure Score enough?

Secure Score measures every tenant against the same Microsoft recommendations, so it cannot reflect the decisions your team made about your own environment. Validating your tenant against the baseline your team approved shows whether each control is in the state you chose, and it reaches areas Secure Score does not check. For the full comparison, read is there something better than Microsoft Secure Score.

	Microsoft Secure Score	Validation against your baseline
What it measures	Your tenant against Microsoft recommendations, the same for every tenant	Your tenant against the baseline your team approved, with findings mapped to CISA SCuBA and 14 other frameworks
Scope	Settings inside one tenant	One view across all the tenants you manage
Outside view	Configuration inside the tenant	External exposure connected to internal settings
Evidence	A score with recommended actions	Independent evidence an auditor will accept

Which Microsoft 365 security tools tell you how to fix what they find?

A finding is only useful when your team knows what to do next. Good remediation guidance spells out the fix and accounts for dependencies, so a change in one area does not open a new exposure in another.

In the Accelerynt Security Platform, findings come with step-by-step guidance linked to Microsoft Learn. Some fixes are scripts your team reviews and runs, while the platform itself stays read-only. Chain Breaker™ ranks fixes by how many attack chains each one breaks, and the What-If Simulator™ shows which chains break before you make a change.

While a fix is in progress, posture findings include compensating detection rules you can deploy into your Sentinel workspace, so the gap is watched until it closes. To turn findings into an ordered plan, read how to turn security assessment findings into a remediation roadmap.

How should you report Microsoft 365 security to executives?

Executives need posture explained as risk and progress. These kinds of evidence travel well into a board conversation:

• Open risk, with dates. A risk register shows how long each risk has been open and what has been resolved.
• The path an attacker would take. Attack chains mapped to MITRE ATT&CK turn a list of settings into a story leaders can follow.
• The one fix that matters most. Ranking fixes by impact gives leaders a clear first decision.
• Framework coverage. Mapped evidence shows where you stand against the standards you report to.

If your board needs risk translated into financial terms, the Executive Risk Assurance Assessment maps live data from Sentinel, Defender, and Purview to the NIST CSF with financial impact scoring.

Where does an outside review fit?

An outside review gives you a baseline from someone who did not configure the tenant. The Microsoft Control Validation Assessment validates your tenant configuration and external attack surface together, maps findings to MITRE ATT&CK, and walks your team through every finding with Accelerynt’s Microsoft security engineers.

To keep that answer current after the review, the Accelerynt Security Platform runs the same validation on your schedule. For more on why baselines go stale, read Your Zero Trust Program Is Built on a Snapshot.

Frequently asked questions